Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/redis-messenger ^v8.0.0 -> satisfiable by symfony/redis-messenger[v8.0.0, ..., v8.1.1]. - symfony/redis-messenger[v8.0.0, ..., v8.0.8] require php >=8.4 -> your php version (8.3.31) does not satisfy that requirement. - symfony/redis-messenger[v8.1.0, ..., v8.1.1] require php >=8.4.1 -> your php version (8.3.31) does not satisfy that requirement.